We do not have a lot of details at this time, though it does appear like an arrest has been made, after a truck drove through a crowd. You can watch the livestream here:

From Yahoo News:

At least two people are feared dead after a truck drove into a crowd of people in central Stockholm.

The incident was in Drottninggatan, a street in a busy shopping district in the centre of the Swedish capital.

Police said a number of people had been hurt in the incident, which comes after trucks were used in terror attacks in Nice and Berlin last year.

According to eyewitnesses speaking to Aftonbladet, a newspaper in Sweden, police at the scene told people the incident was being treated as a possible terrorist attack.

The public service radio station Ekot initially reported that at least three people were killed when the truck hit pedestrians in central Stockholm before crashing into a department store.

Other reports have placed the death toll at two, although it is thought that could rise.

Reports of the incident first emerged on social media shortly after 2pm GMT.

Around 30 minutes after the incident, reports also emerged of a shooting near the site of the crash.

Pools of blood were visible on the street along with bodies covered in blankets.

Paramedics could also be seen tending to the injured near the truck.

“There is total confusion, I do not know how many are injured, many people are totally shocked,” one witness, Leif Arnmar, who was working in the department store, told Swedish national broadcaster SVT.

Jan Granroth told Aftonbladet: “We stood inside a shoe store and heard something … and then people started to scream.